DATA VISUALIZATION
• + Synergy Tool
• + Map Explorer

AEROSOL OPTICAL DEPTH (V3)-SOLAR
• + Data Display
• + Download Tool
• + Download All Sites
• + Climatology Tables
• + Web Service

AEROSOL INVERSIONS (V3)
• + Data Display
• + Download Tool
• + Download All Sites
• + Web Service

SOLAR FLUX
• + Data Display

OCEAN COLOR
• + V3 Data Display
• + V3 Web Service
• + Download All Sites

LUNAR AOD (V3)
• + Data Display
• + Download Tool
• + Download All Sites
• + Web Service

ZENITH RADIANCE (V3)
• + Web Service
CLOUD MODE (V2) - PROVISIONAL
• + Data Display

Aerosol measurement observations from ground-based sun photometers and sun/sky radiometers have played a critical role in developing, reformulating and validating satellite algorithms to characterize aerosol optical depth, modal aerosol retrievals and single scattering albedo among other parameters.   New and improved algorithms are being developed for current and future satellite missions that will place a greater demand on the accuracy and fidelity of the ground-based measurements for validation, multi data set synergism and long-term climate research.  Heretofore satellite validation studies using sun and sky scanning spectral radiometer measurements such as AERONET have relied on point observations extrapolated to a two dimensional domain to compare to the satellite retrieval.  Additionally few of the ground-based remote sensing measurements have had a rigorous comparison or validation against other ground-based measurements particularly in situ observations of aerosol size and absorption.  DRAGON-USA will provide a data set to address satellite validation and in situ comparisons.

+ DRAGON White Paper

• Establish a mesoscale gridded network of sun photometers that encompasses, urban and, agricultural over the Denver metropolitan region of Colorado
• Optimize the grid to validate/collaborate inversion products in conjunction with aircraft flights performing in situ measurements
• Optimize the gridded network to validate satellite retrievals from 50 m to 10 Km pixel resolution
• Supplement the gridded network with non gridded sites to capture aerosol variability
• Develop a geo-referenced database that will accommodate supplementary/complimentary data sets

The campaign will be implemented under the NASA-funded Earth Venture airborne mission, DISCOVER-AQ (Deriving Information on Surface Conditions from Column and Vertically Resolved Observations Relevant to Air Quality). The campaign will employ NASA aircraft to make a series of flights, with scientific instruments on board to measure gaseous and particulate pollution, during a month period from mid-July to mid-August 2014 near Denver, Colorado. The instrument spatial distribution encompasses a 120 km long by 100 km wide region.

Starting in April 2014, DRAGON-USA Colorado instrument deployments will occur in and around the northeastern Colorado with approximately 15 regionally distributed instruments in support of NASA DISCOVER-AQ P3-B and King Air air quality research flights. Simultaneously from mid-July to mid-August 2014, the Front Range Air Pollution and Photochemistry Experiment (FRAPPE) will complement NASA activities with both ground-based and C-130 aircraft measurements to provide more robust characterization of local to regional chemical environment including photochemistry, oxidant and aerosol formation and fate, flow and reciruculation patterns and large-scale inflow.

Figure 1. DRAGON-USA Colorado 2014 Site Distribution Download KMZ file.

DRAGON Text Lists

+ Level 1.0 AOD Data (TXT)
+ Level 1.5 AOD Data (TXT)
+ Level 2.0 AOD Data (TXT)

DRAGON Google Earth Distribution

+ Level 1.0 AOD Data (Google Earth KMZ)
+ Level 1.5 AOD Data (Google Earth KMZ)
+ Level 2.0 AOD Data (Google Earth KMZ)